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annotate graal/com.oracle.max.graal.jtt/src/com/oracle/graal/jtt/optimize/Reduce_LongShift01.java @ 5059:ed559a528128

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author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 08 Mar 2012 17:57:30 +0100
parents graal/com.oracle.max.graal.jtt/src/com/oracle/max/graal/jtt/optimize/Reduce_LongShift01.java@5b04b33dac74
children 4ed4295ce15f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.max.graal.jtt.optimize;
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24
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25 import org.junit.*;
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26
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27 /*
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28 * Tests optimization of integer operations.
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29 */
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30 public class Reduce_LongShift01 {
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31
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32 public static long test(long arg) {
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33 if (arg == 0) {
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34 return shift0(arg + 10);
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35 }
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36 if (arg == 1) {
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37 return shift1(arg + 10);
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38 }
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39 if (arg == 2) {
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40 return shift2(arg + 10);
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41 }
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42 if (arg == 3) {
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43 return shift3(arg + 10);
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44 }
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45 if (arg == 4) {
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46 return shift4(arg + 10);
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47 }
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48 if (arg == 5) {
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49 return shift5(arg + 10);
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50 }
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51 return 0;
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52 }
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53
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54 public static long shift0(long x) {
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55 return x >> 0;
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56 }
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57
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58 public static long shift1(long x) {
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59 return x >>> 0;
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60 }
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61
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62 public static long shift2(long x) {
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63 return x << 0;
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64 }
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65
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66 public static long shift3(long x) {
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67 return x >> 64;
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68 }
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69
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70 public static long shift4(long x) {
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71 return x >>> 64;
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72 }
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73
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74 public static long shift5(long x) {
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75 return x << 64;
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76 }
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77
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78 @Test
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79 public void run0() throws Throwable {
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80 Assert.assertEquals(10L, test(0));
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81 }
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82
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83 @Test
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84 public void run1() throws Throwable {
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85 Assert.assertEquals(11L, test(1));
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86 }
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87
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88 @Test
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89 public void run2() throws Throwable {
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90 Assert.assertEquals(12L, test(2));
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91 }
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92
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93 @Test
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94 public void run3() throws Throwable {
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95 Assert.assertEquals(13L, test(3));
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96 }
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97
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98 @Test
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99 public void run4() throws Throwable {
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100 Assert.assertEquals(14L, test(4));
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101 }
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102
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103 @Test
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104 public void run5() throws Throwable {
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105 Assert.assertEquals(15L, test(5));
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106 }
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107
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108 }